Long before air conditioning, Persian architects found an ingenious way to cool off.

The tower in this 1,000-year-old mud-brick village seems to vibrate for no apparent reason.

The fire inside this temple has burned for more than 1,500 years.

This ancient burial site is believed to be one of the first earthquake-protected structures in the world.

A dreamy mausoleum honors Persia's most famous poet.

These little castles each held thousands of pigeons.

17th century mosque for Shah Abbas' harem.

The ancient necropolis houses the immense rock-cut tombs of four Persian kings.

Putrefaction plateaus in Iran, where the dead were sent for decontamination before going to their final resting place.

A spectacular rainbow of stained glass makes the "Pink Mosque" one of the most beautiful in Iran.

The palace of the King of Kings, burned by Alexander the Great.